Micro-ct analysis of katian radiolarians from the malongulli formation, new south wales, australia, and implications for skeletogenesis

HIGHLIGHTS

• who: Siyumini Perera from the Radiolarians are a major plankton group of the Paleozoic, capable of providing important insight into the evolution of heterotrophic plankton during their Ordovician diversificationAnalysis of paleobiodiversity dynamics relies on documentation of chronostratigraphically well-constrained radiolarian assemblages (e_g, Danelian and Monnet, ). Radiolarians from the Upper Ordovician Katian Stage were first reported from the Hanson Creek Formation in Nevada (Dunham and Murphy, ) and later revisited by Renz (1990). On the basis of conodonts from layers immediately above the radiolarian-bearing concretionary horizon, the assemblage represents the Ordovician Ka, (mid-Katian) interval (Trotter and Webby . . .
  

   

  

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